ENGI 7706/7934: Finite Element Analysis Abaqus CAE Tutorial 1

21 Pages·2014·1.33 MB·English

ENGI 7706/7934: Finite Element Analysis
Abaqus CAE Tutorial 1: 2D Plane
Truss
Lab TA: Xiaotong Huo EN 3029B [email protected]
Download link for Abaqus student edition:
http://academy.3ds.com/software/simulia/abaqus-student-edition/

Problem Statement:
Consider the simple six-bar pin-jointed structure shown. All members have the same
cross-sectional area (A = 0.001 m2) and elastic modulus (E = 200 GPa). The load P of
20 kN acts at an angle of 30 degrees from the vertical. The structure dimensions are in
meters. Use ABAQUS to solve for the nodal displacements, element stresses and
reaction forces.

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1.2.2 ABAQUS CAE Procedure – Preliminary Steps
 Create Working Directory Create Working Directory
 Open Abaqus CAE
 Set Work Directory
 File > Set Work Directory
 Select Directory Created in step 1.1.

1.2.3 Create Part (Module: Part)
 Click Create Part Icon
 Name Part “Truss”
 Select:
2D Planar
Deformable
Wire
 Set Approximate Size to 50.
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 Click Create Isolated Points
 Enter the following coordinates (appearing in bottom left corner of drawing
window)
 Node X Y
1. 0 0 (Press Enter)
2. 4 0 (Press Enter)
3. 0 3 (Press Enter)
4. 4 3 (Press Enter)
5. 2 2 (Press Enter)


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 Click Create Lines icon
 Join Node 1 with 2 , Node 2 with 5, Node 5 with 4, Node 4 with 2 (now right
click and cancel procedure)
 Again, click create lines icon and join Node 3 with 5, and 5 with 1 (right
click and cancel procedure)
 Click on “Auto Fit View” appearing on window top, click “Done” appearing
in window bottom

1.2.4 Material and Geometric or Section Properties (Module: Property)
 Select Property from the Module Drop-Down Menu
 Click Create Material Icon

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 Enter Material Name “Elastic”
 Select Mechanical > Elasticity > Elastic
 Enter Young’s Modulus = 200e9, Poisson’s Ratio = 0.3

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 Click Create Section Icon
 Name Section “Truss”
 Select Category “Beam”
 Select Type “Truss”… Continue
 Select Material “Elastic”
 Set Cross-sectional Area = 0.001… OK
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 Click Assign Section Icon
 Select the Truss by holding left mouse key and selecting the entire truss…
Done
 Select Section Truss… OK...Done

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1.2.5 Instance, Part and Model Generation (Module: Assembly)
 Select Assembly from the Module Drop-Down Menu
 Click Instance Part Icon
 Accept Defaults… OK

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1.2.6 Define Load Step Conditions (Module: Step)
 Select Step from the Module Drop-Down Menu
 Click Create Step Icon
 Name Step “ApplyForce”
 Accept Defaults (Procedure Type: General > Static, General)… Continue

 Enter Description “Apply Force to Truss Element at an Angle”
 Accept Defaults on “Basic” Tab
 Select “Incrementation” Tab
 Enter Increment Size: Initial = 0.1… OK

1.2.7 Apply Essential and Natural Boundary Conditions (Module: Load)
 Select Load from the Module Drop-Down Menu
 Click Create Load Icon
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 Name Load “CLOAD”
 Select Category: Mechanical > Type Concentrated Force

 Select Node 2 (x = 4, y = 0) … Done

 Enter CF1 = 10000 (10.0 kN)
 Enter CF2 = 17320 (17.3 kN)… OK

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